`vagrant init` uses new OptParse based CLI

lib/vagrant.rb

@@ -97,6 +97,7 @@ I18n.load_path << File.expand_path("templates/locales/en.yml", Vagrant.source_ro
 Vagrant.commands.register(:box)          { Vagrant::Command::Box }
 Vagrant.commands.register(:destroy)      { Vagrant::Command::Destroy }
 Vagrant.commands.register(:halt)         { Vagrant::Command::Halt }
+Vagrant.commands.register(:init)         { Vagrant::Command::Init }
 Vagrant.commands.register(:package)      { Vagrant::Command::Package }
 Vagrant.commands.register(:provision)    { Vagrant::Command::Provision }
 Vagrant.commands.register(:reload)       { Vagrant::Command::Reload }

lib/vagrant/command.rb

@@ -9,6 +9,7 @@ module Vagrant
     autoload :BoxList,      'vagrant/command/box_list'
     autoload :Destroy,      'vagrant/command/destroy'
     autoload :Halt,         'vagrant/command/halt'
+    autoload :Init,         'vagrant/command/init'
     autoload :Package,      'vagrant/command/package'
     autoload :Provision,    'vagrant/command/provision'
     autoload :Reload,       'vagrant/command/reload'

lib/vagrant/command/init.rb

@@ -1,13 +1,36 @@
+require 'optparse'
+
+require 'vagrant/util/template_renderer'
+
 module Vagrant
   module Command
-    class InitCommand < Base
-      argument :box_name, :type => :string, :optional => true, :default => "base"
-      argument :box_url, :type => :string, :optional => true
-      source_root File.expand_path("templates/commands/init", Vagrant.source_root)
-      register "init [box_name] [box_url]", "Initializes the current folder for Vagrant usage"
-
+    class Init < Base
       def execute
-        template "Vagrantfile.erb", env.cwd.join("Vagrantfile")
+        options = {}
+
+        opts = OptionParser.new do |opts|
+          opts.banner = "Usage: vagrant init [box-name] [box-url]"
+        end
+
+        # Parse the options
+        argv = parse_options(opts)
+        return if !argv
+
+        save_path = @env.cwd.join("Vagrantfile")
+        raise Errors::VagrantfileExistsError if save_path.exist?
+
+        template_path = ::Vagrant.source_root.join("templates/commands/init/Vagrantfile")
+        contents = Vagrant::Util::TemplateRenderer.render(template_path,
+                                                          :box_name => argv[0] || "base",
+                                                          :box_url => argv[1])
+
+        # Write out the contents
+        save_path.open("w+") do |f|
+          f.write(contents)
+        end
+
+        @env.ui.info(I18n.t("vagrant.commands.init.success"),
+                     :prefix => false)
       end
     end
   end

lib/vagrant/errors.rb

@@ -290,6 +290,11 @@ module Vagrant
       error_key(:interrupted)
     end
 
+    class VagrantfileExistsError < VagrantError
+      status_code(58)
+      error_key(:vagrantfile_exists)
+    end
+
     class VagrantfileSyntaxError < VagrantError
       status_code(41)
       error_key(:vagrantfile_syntax_error)

templates/locales/en.yml

@@ -115,6 +115,9 @@ en:
 
           http://vagrantup.com/docs/getting-started/setup/windows.html
 
+      vagrantfile_exists: |-
+        `Vagrantfile` already exists in this directory. Remove it before
+        running `vagrant init`.
       vagrantfile_syntax_error: |-
         There is a syntax error in the following Vagrantfile. The syntax error
         message is reproduced below for convenience:
@@ -197,6 +200,12 @@ en:
         vm_not_running: "VM is not currently running. Please bring it up to run this command."
       box:
         no_installed_boxes: "There are no installed boxes! Use `vagrant box add` to add some."
+      init:
+        success: |-
+          A `Vagrantfile` has been placed in this directory. You are now
+          ready to `vagrant up` your first virtual environment! Please read
+          the comments in the Vagrantfile as well as documentation on
+          `vagrantup.com` for more information on using Vagrant.
       status:
         aborted: |-
           The VM is in an aborted state. This means that it was abruptly